Someone at Gobekli Tepe made a decision archaeologists still argue about: to bury the site's finest carved pillars rather than leave them standing.
Older than farming
Radiocarbon dating places Gobekli Tepe's oldest enclosures at roughly 9600 BCE, meaning the massive T-shaped limestone pillars, some carved with foxes, snakes, scorpions and vultures, were raised by hunter-gatherers before pottery, writing or, on current evidence, settled agriculture existed in the region. That sequence unsettled the older assumption that farming had to come first and monumental building after.
Noticed, then really found
A University of Chicago and Istanbul University survey team recorded the mound in 1963 but judged it an unremarkable medieval cemetery and moved on. The German archaeologist Klaus Schmidt, revisiting the survey notes, recognised the significance of the worked flint scattered on the surface and began excavation in 1994, work that continued under his direction until his death in 2014.
Deliberately backfilled
Several of the enclosures show signs of having been intentionally filled in with rubble and debris in antiquity rather than abandoned to natural erosion. Why builders would bury their own monumental work is unresolved; proposed explanations range from ritual closure of a structure considered spent to a change in belief that made continued use unwelcome, but no inscription or comparable site explains the practice directly.